Reactions on single-crystal surfaces

Nickelocene adsorption on single-crystal surfaces

Single-molecule insight into Wurtz reactions on metal surfaces.

Wurtz reactions feature the dehalogenated coupling of alkyl halides. In comparison to their widely investigated counterparts, Ullmann reactions, Wurtz reactions have however been scarcely explored on surfaces. Herein, by combining high-resolution STM imaging and DFT calculations, we have systematically investigated Wurtz reactions on three chemically different metal surfaces including Cu(110), ...

The Oxidation of Methanol on Cr2O3 (1012) Single Crystal Surfaces

The reaction of methanol with nearly-stoichiometric and oxygen-terminated surfaces of Cr2O3 was studied using thermal desorption spectroscopy and x-ray photoelectron spectroscopy. Dissociative adsorption of methanol occurs on the nearlystoichiometric surface and is attributed to the availability of cation-anion site pairs. An array of products including CH4, CH2O, CO, CO2, and H2 are produced a...

Photoinduced hardness change on TiO(2) single crystal surfaces.

The dynamic hardness of rutile TiO(2) single crystal surfaces was investigated using a nanoindentation technique and the hardness increase was observed only in the near-surface region, possibly due to the volume expansion accompanied by the photoinduced high hydrophilicity.

Electron scattering at single crystal Cu surfaces

Epitaxial copper layers, 6.6 nm to 1.2 μm thick, were grown on MgO(001) by ultra-high vacuum magnetron sputter deposition at 100 °C. The surface morphology, as determined by in-situ scanning tunneling microscopy, exhibits a regular mound structure. The mounds grow in width w and height h as a function of layer thickness t from h=3 nm and w=20 nm for t=20 nm to h=5 nm and w=200 nm for t=1.2 μm. ...